That's actually false.. The had to do that because the cameras back then were made essentially of potatoes stapled and glued together with feces, they had to do it with other people as well for certain scenes.

But Bruce Lee never had real competition experience fighting, although he mastered like every martial art, he never truly applied it in professional combat.

I think in a fight, Chuck would have won.

Think MMA, there are people who are masters of a plethora of martial arts, but aren't effective fighters but instead are extremely effective trainers/coaches etc.